Electrostatic Machines & Generators

Gold leaf, pack 6.

This extra-large electroscope is ideal for classroom demonstrations of electrostatic principles such as conduction, induction and coulomb repulsion. light-weight metal vane is used as pointer in the electroscope. The lightweight metal blade deflects when the electroscope plate is charged. transparent scale is provided to measure the angle of the deflection. The front glass window slides up to allow insertion of ionizing material in chamber. This electroscope comes with two accessories: an electrophorus disc and spherical electrode. Dimensions: 248 x 203 x 121 mm.

For charge detection and measurement. Useful for a wide range of experimental applications including charging by induction, Faraday's ice pails, Coulomb's law and capacitance of an isolated sphere. The 3.5 digit liquid crystal display has 13 mm high digits with wide field of view unobscured by trailing leads. The display also provides indication of polarity and low battery. The unit is exceptionally easy to read. Two colour coded 4 mm sockets are located on the sides for maximum convenience and anti-slip feet are fitted to the base. Low operating current gives expected battery life in excess of 500 hours. Housed in a robust, ABS plastic case. Supplied with charge plate, battery and instructions. • Range:0 to 1999 nC • Resolution: 1 nC • Overload: 10 x full scale • Accuracy: ±10% of full scale • Input Resistance: 100 GΩ • Leakage Current: 1pA (10pA max) • Capacitance: 4.7mF

This Parallel Plate Capacitor demonstrates the working of capacitor; a device which allows the storage of electrical energy in the electric field created between a pair of conductors on which electric charges of equal magnitude, but opposite polarity, have been placed. The apparatus will show the dependence on capacity to the distance between the plates and the nature of the medium between them. Dielectric materials can be placed between the plates for further investigation.

This apparatus allows visualisation of electric fields between various electrode configurations, in a similar way to how iron filings allow visualisation of magnetic fields. It is constructed from transparent acrylic, which allows it to be placed on an overhead projector for class demonstrations but can also be used on white surface for use with visualisers or for direct observation by smaller groups. In order to create electric fields large enough to influence the particles, a high voltage, low current 2-5kV EHT power supply is required. Apparatus includes electrodes, clear acrylic base with 4 mm sockets to clamp electrodes and connect power supply, petri dishes and instructions. Also requires liquid paraffin (PA4452 or PA4454 and semolina (not supplied). Base dimensions (L x W x H): 150 x 150x 65 mm.

A hand driven Van de Graaff generator, which is a very effective unit for introducing electrostatics. The length of the sparks generated is wholly dependent upon the speed at which the user turns the handle but sparks of around 20-30 mm are comfortably achievable. Dimensions (H Dome x Dia.): 400 x 200 mm.

Spare main charge belt for hand driven Van De Graaff, EL101544

Spare hand drive belt for hand driven Van De Graaff, EL101544

A top quality Van de Graaff featuring a motor or hand drive split dome to show how charge is collected in the dome. The generator uses one nylon and one Teflon roller to create double charging effect and sparks up to 10 cm. The 22 cm conductor sphere features a 4 mm socket on the top to accept accessories with a 4 mm plug. For 220/240 V. Dimensions (H x W x D): 560 x 220 x 220 mm. Please note that Discharge Sphere is supplied separately.

Spare charge belt for premium Van De Graaff, EL62550.

Spare drive belt for premium Van De Graaff, EL62550. Dimensions for O-rings: 2.62 x 71.12 mm. 3.0 x 82.00 mm.

For using to discharge the Van de Graaff with sparks up to 10 cm. The polished stainless steel sphere is mounted on stainless steel rod. The base of the rod has 4 mm hole for connection to the earth socket on the Van de Graaff. Sphere diameter: 10 cm. Rod length 41 cm. Please note: retort base not included.

The Generator consists of a dome supported by a pillar and rubber belt driven by an electric motor concealed in the metal base. Static electrical charge is produced by friction between this band and two rollers. The charge is removed from the belt by a metal gauze and stored in the dome. The motor is powered using mains supply (230 V). The base is fitted with a 4 mm diameter socket which can be used either for supporting a conducting sphere (fitted with cranked rod support) or for wire connection to a separate conducting sphere. cover is provided to keep the Van de Graaff free from dust when not in use. • Diameter of Generator Dome: 220 mm • Total Height: 500 mm • Base (max) Dimensions: 218 x 182 x 93 mm • Operating Voltage: 220 to 240 V AC (with 5 A cartridge fuse) • Dome Capacitance: (approx) 15 pF • Maximum (intermittent) current: (approx) µA • Maximum Spark Length: (approx) 50 mm • Diameter of Conducting Spheres: 100 mm Supplied with accessories as shown.

Spare charge belt for Van De Graaff Generator EL85100.

For demonstrating and investigating the nature and behaviour of static electrical charge. Includes; Brush of hair, Dancing balls, Oscillating sphere, Spiked arm wheel, Neon tester, Plastic comb.

This gold leaf electroscope is great for hands on experience with electrostatic principles in physics classrooms and labs. The solidly constructed sheet anodized aluminium walls of the electroscope are mounted on a plastic base. The front glass window slides up to allow insertion of ionizing material in chamber. A transparent scale is attached inside chamber to measure the deflection of the gold leaf. Supplied with two gold leaf sheets. Fitted with 4 mm socket. Dimensions: 165 x 95 x 70 mm. Note: The gold-leaf does not come pre-attached to the electroscope. Instructions on how to properly attach the gold-leaf to the conducting rod are included with the product manual.

Spare drive belt for EL85100.